4029126991 has 2 divisors, whose sum is σ = 4029126992. Its totient is φ = 4029126990.

The previous prime is 4029126971. The next prime is 4029127021. The reversal of 4029126991 is 1996219204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4029126991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4029126901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2014563495 + 2014563496.

It is an arithmetic number, because the mean of its divisors is an integer number (2014563496).

Almost surely, 2^4029126991 is an apocalyptic number.

4029126991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4029126991 is an equidigital number, since it uses as much as digits as its factorization.

4029126991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 4029126991 is about 63475.4046147010. The cubic root of 4029126991 is about 1591.2447553969.

The spelling of 4029126991 in words is "four billion, twenty-nine million, one hundred twenty-six thousand, nine hundred ninety-one".